Shopping cart base

ABSTRACT

A shopping cart includes a base, a pair of masts, and a basket. The base extends generally horizontally between a front portion and a rear portion of the cart and including a plurality of wheels. The pair of masts extends generally vertically upward from the base in a generally singular plane extending laterally across the rear portion of the cart. Each mast includes a rear portion facing the rear portion of the cart and defining a generally straight surface, and a front portion facing in a direction generally opposite the rear portion of the respective mast and defining a generally concave curved portion. The basket includes a front portion and a rear portion with the rear portion of the basket connected to the base via the pair of masts to support the front portion of the basket in a vertically spaced relationship over the base adjacent the front portion of the cart.

BACKGROUND OF THE INVENTION

Shopping carts have become very important in Western culture. Storesaround the world maintain fleets of shopping carts to facilitate acustomer's selection, transport, and purchase of goods within thosestores. Over many decades, the shape and size of shopping carts havechanged to meet different models of shopping. However, in recenthistory, the basic shopping cart has changed very little, except for theapplication of different materials such as plastics.

Retailers devote considerable resources to shaping a customer'sexperience within a retail store to make shopping easier, morecomfortable, and attractive. Unfortunately, very little of thisattention has been placed on the shopping cart. Accordingly, shoppingcarts remain generally heavy, bulky, and difficult to maneuver.Conventional shopping carts are constructed to be rugged to withstandweather, misuse, and rough handling during use, collection and storage.Unfortunately, this attention to ruggedness has produced a cart with asteel chassis and handles, sometimes having rough edges and/orrelatively sharp corners. These steel components contribute to thestodgy feel and unattractive appearance of many conventional shoppingcarts.

Given their high profile in the retail environment and their impact onthe experience of the consumer, shopping carts should better serve tomeet the needs and wants of consumers, especially in fast-moving, retailcultures.

SUMMARY OF THE INVENTION

Embodiments of the invention are directed to a shopping cart. In oneembodiment, a shopping cart includes a base, a pair of masts, and abasket. The base extends generally horizontally between a front portionand a rear portion of the cart and including a plurality of wheels. Thepair of masts extends generally vertically upward from the base in agenerally singular plane extending laterally across the rear portion ofthe cart. Each mast includes a rear portion facing the rear portion ofthe cart and defining a generally straight surface, and a front portionfacing in a direction generally opposite the rear portion of therespective mast and defining a generally concave curved portion. Thebasket includes a front portion and a rear portion with the rear portionof the basket connected to the base via the pair of masts to support thefront portion of the basket in a vertically spaced relationship over thebase adjacent the front portion of the cart.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of the invention will be described with respect to thefigures, in which like reference numerals denote like elements, and inwhich:

FIG. 1 is a perspective view of a shopping cart, according to anembodiment of the invention.

FIG. 2 is an exploded view of portions of the FIG. 1 shopping cart,according to an embodiment of the invention.

FIG. 3 is a front plan view of the FIG. 1 shopping cart, according to anembodiment of the invention.

FIG. 4 is an enlarged partial view of a rear leg and wheel assembly,according to an embodiment of the invention.

FIG. 5 is an enlarged perspective view illustrating assembly of a handleand a basket of the shopping cart, according to an embodiment of theinvention.

FIG. 6 is an enlarged partial top plan view of a rear portion of abasket of a shopping cart, according to an embodiment of the invention.

FIG. 7 is an enlarged partial top plan view of a front portion of abasket of a shopping cart, according to an embodiment of the invention.

FIG. 8 is an enlarged partial bottom plan view of a rear portion of abasket of a shopping cart, according to an embodiment of the invention.

FIG. 9 is a partial sectional view of the basket as taken along line 9-9of FIG. 2, according to an embodiment of the invention.

FIG. 10 is a top plan view of a gate and seat assembly of a shoppingcart, according to an embodiment of the invention.

FIG. 11 is a perspective view of a gate and seat assembly of a shoppingcart, according to an embodiment of the invention.

FIG. 12 is a partial perspective view of a back rest of a gate and seatassembly of a shopping cart, according to an embodiment of theinvention.

FIG. 13A is a perspective view of a flap and a seat of a gate and seatassembly of a shopping cart, according to an embodiment of theinvention.

FIG. 13B is sectional view as taken along lines 13B-13B of FIG. 13A of aflap of a gate and seat assembly, according to an embodiment of theinvention.

FIG. 14 is a partial perspective view of a note holder of a shoppingcart, according to another embodiment of the invention.

FIGS. 15A and 15B are perspective views of a cupholder seat assembly,according to another embodiment of the invention, illustrating its usein a down position and an up position, respectively.

DETAILED DESCRIPTION

In the following detailed description, reference is made to theaccompanying drawings which form a part hereof, and in which is shown byway of illustration specific embodiments in which the invention may bepracticed. In this regard, directional terminology, such as “top,”“bottom,” “front,” “back,” “leading,” “trailing,” etc., is used withreference to the orientation of the Figure(s) being described. Becausecomponents of embodiments of the present invention can be positioned ina number of different orientations, the directional terminology is usedfor purposes of illustration and is in no way limiting. It is to beunderstood that other embodiments may be utilized and structural orlogical changes may be made without departing from the scope of thepresent invention. The following detailed description, therefore, is notto be taken in a limiting sense, and the scope of the present inventionis defined by the appended claims.

Embodiments of the invention are directed to a shopping cart. Theshopping cart enables a consumer to shop for items within a store,placing those items in the shopping cart as the consumer moves throughthe store. In one embodiment, a shopping cart comprises a wheeled base,a basket, and a handle. In one aspect, the handle forms a substantiallycontinuous loop extending above an upper edge of the basket to enablesteering the cart from the front, sides or rear of the cart. Thisergonomic arrangement produces a panoramic grasping zone, in which thecart can be maneuvered from virtually any position within a 360 degreeorientation about the cart. The panoramic handle enhances a consumer'sability to push, pull, or turn the cart while walking (or standing) at afront, side, or rear of the cart. Accordingly, this panoramic handleaccommodates consumer preferences such as pulling a cart from the frontwhile placing items in the cart as the consumer moves through racks andaisles in the store.

In another embodiment, a basket of the shopping cart comprises acontainer defined by a frame and a plurality of panels. The panelsextend between portions of the frame and define the sides, front andbottom of the basket. The frame provides structural strength andstability to the basket. The panels contain items within the cart whileproviding a consumer-friendly, smooth surface on both the interior andexterior surfaces of the basket. In one aspect, the frame and the panelsare molded together as a single unitary member so that members of theframe and the panels blend into each other in a generally integratedmanner.

In one aspect, the handle acts as an upper member of the frame of thebasket to provide structural strength and stability to the basket. Inthis aspect, the handle forms a substantially continuous loop having asize and shape that generally matches a size and shape of a mouth of thebasket. In one embodiment, the handle is connected at portions of themouth of the basket with a majority of the handle being spaced from theupper edge of the basket. In another aspect, the loop of the handle isshaped and sized to extend vertically in substantially the same plane aseach of a front panel and a pair of opposed side panels of the basket.

In another embodiment, the basket is supported in a cantileveredarrangement by the wheeled base. In one aspect, a mast extends betweenthe base and the basket to form the only vertical support for the basketwith the base including a pair of base supports extending upward fromthe frame of the base. In this aspect, the shopping cart is free fromany additional vertical supports (mounted between the base and thebasket) located at a midportion or front portion of the cart.

These embodiments, and additional embodiments, are described inassociation with FIGS. 1-15.

FIGS. 1-3 illustrate a shopping cart 10, according to one embodiment ofthe invention. FIG. 1 is a perspective view of shopping cart 10, FIG. 2is an exploded view of portions of shopping cart 10 of FIG. 1, and FIG.3 is a front view of portions of shopping cart 10 of FIG. 1.

As shown in FIG. 1, shopping cart 10 comprises handle 12, basket 14, andwheeled base 16. Handle 12 is mounted at an upper portion of basket 14.Basket 14 defines a container for carrying items and supports a gate andseat assembly 20, which includes gate 22, seat 24, and backrest 26.Wheeled base 16 supports tray 28, front wheels 30, and rear wheels 32via legs 34A,34B (also shown in FIG. 3). In one aspect, cart 10comprises a front portion 50, rear portion 51, and side portions 52,54.

Shopping cart 10 enables a consumer to move the cart through a store toplace items in basket 14 for later purchase at a check-out counter ofthe store. Handle 12 facilitates maneuvering the cart 10 while gate andseat assembly 20 enables a child to travel in the cart 10 whileshopping. In one aspect, gate and seat assembly 20 is pivoted upwardwithin basket 14 to enable nesting multiple carts 10 together. Inanother aspect, gate and seat assembly 20 is also collapsible adjacent arear portion 51 of the basket to make more room for items in basket 14,or to facilitate nesting of multiple carts 10.

Base 16 is described in more detail in association with FIGS. 1-4.Basket 14 is described in more detail in association with FIGS. 1-9.Gate and seat assembly 20 is described in more detail in associationwith FIGS. 10-15B.

In one embodiment, each of handle 12, basket 14, and base 16 is madeexclusively of a plastic material. This arrangement enables alightweight cart while providing numerous structural, performance, andergonomic functions. In another embodiment, one of handle, basket 14, orbase 16, or additional components is made of a material other than aplastic material, such as metal or other materials.

In one embodiment, each of handle 12, basket 14, and base 16 is madefrom a nylon material. In another embodiment, each of handle 12, basket14, and base 16 is made from a high density polyethylene (HDPE)material. In another embodiment, at least one of the handle 12, basket14, and base 16 is made from a nylon material while at least one ofhandle 12, basket 14, and base 16 is made from a HDPE material. In oneembodiment, handle 12 comprises a nylon material, basket 14 comprises aHDPE material, and base 16 comprises a nylon material.

In one embodiment, one or more of the handle 12, basket 14, and base 16are made from a red-colored material and one or more of handle 23,basket 14 and base 16 are made from a non-red colored material, such asgrey. In another embodiment, a handle 12 and base 16 are made from anon-red colored material and basket 14 is made from a red-coloredmaterial. In another embodiment, each of the handle 12, basket 14, andbase 16 are made from a red-colored material. In another embodiment,each of the handle 12, basket 14, and base 16 are made from a non-redcolored material.

As shown in FIGS. 1-2, in one embodiment, handle 12 comprises a frame 60including rear portion 62, side portions 64, 65, front portion 66, frontcorner portions 68, and rear corner portions 72A, 72B. In one aspect,frame 60 of handle 12 comprises a substantially continuous loop. Inanother aspect, the substantially continuous loop has a size and shapethat substantially match a size and shape of a mouth 73 of basket 14. Inone aspect, mouth 73 comprises an upper edge of basket 14, includingupper edges 86A,86B, 85 as described in more detail later in associationwith FIGS. 1-8. In one aspect, the shape of the substantially continuousloop is a generally rectangular shape and the shape of the mouth 73 is agenerally rectangular shape.

Each rear corner portion 72A, 72B of frame 60 of handle 12 comprises aconnecting portion 74A, 74B, respectively, extending downward forattachment relative to basket 14. Each rear corner portion 72 alsocomprises a pivot mechanism 76 for pivotal mounting of gate 22 of gateand seat assembly 20 relative to frame 60 of handle 12. Each frontcorner portion 68 of frame 60 of handle 12 comprises a connectingportion 69A, 69B extending downward for attachment relative to basket14.

In one embodiment, as shown in FIG. 1, handle 12 of cart 10 comprises apanoramic grasping zone 90 including front grasping zone 90A, sidegrasping zones 90B, 90C and rear grasping zone 90D. Grasping zone 90comprises a 360 degree orientation (e.g., a universal orientation)defined via handle 12 to enable a consumer to quickly and easily grabhandle 12 no matter where the consumer is located relative to a front,side, or rear of cart 10. In one aspect, front grasping zone 90A ofhandle 12 is defined by generally elongate slot 93 between front portion66 of handle frame 60 and upper edge 85 of basket 14. Side graspingzones 90C, 90B of handle 12 are defined, respectively, by generallyelongate slots 91A, 91B between side portion 65 of handle frame 60 andupper edge 86A of basket 14 and between side portion 64 of handle frame60 and upper edge 86B of basket 14, respectively. Rear grasping zone 90Dof handle 12 is defined by the generally elongate spacing between rearportion 62 of handle frame 60 and upper edge 87 of gate 22 of gate andseat assembly 20.

In one embodiment, slots 91A, 91B have a length that is substantiallyequal to a length of panel 110A, 110B, respectively, as extendinglongitudinally between a front portion 50 and rear portion 51 of cart10. In one embodiment, slot 93 has a length that is substantially equalto a length of panel 112 extending transversely across a front portion50 of cart 10

Grasping zone 90 enables a consumer to conveniently grab any portion ofcart 10, from the side, the front, or the rear of the cart to pull orpush the cart in a desired direction. In this respect, shopping cart 10provides an ergonomic shopping experience by enabling the consumer agrab-and-go interface with cart 10 in which the consumer can readilygrab handle 12 from any position (front, back, side, rear) relative tothe cart 10, and go in a desired direction by pushing, pulling orturning the cart as desired. In one example, this panoramic graspingmechanism enhances a consumer's ability to place items in basket 14 byenabling the consumer to stand near a front portion 50 of cart 10 whileputting items in basket 14 and pulling cart 10 via front portion 66 offrame 60 of handle 12.

Moreover, in another aspect of handle 12, the combination of therelatively long length of slots 91A,91B,93 associated with therespective portions 65, 64, 66 of handle frame 60 defines a top rail ofcart 10. This top rail enables a consumer to slide their hand alonghandle 12 to position their hand at a desired location of the cart(e.g., front, side, rear) prior to initiating a pushing, pulling, orturning action on the cart.

In one embodiment, handle 12 is a member that is separate from andindependent of basket 14 and wheeled base 16, as shown further in FIG.2. As shown in FIG. 1, handle 12 acts as an independent structuralmember, unlike handles of conventional carts in which a handle typicallyforms an extension of a wheeled chassis.

In another embodiment, handle 12 also defines a structural frame 100 incooperation with basket 14. In particular, when connected to basket 14at rear corner portions 72A, 72B and front corner portions 68 of frame60 of handle 12, frame 60 of handle 12 defines an upper portion 101 ofstructural frame 100 in cooperation with a plurality of frame members ofbasket 14. In another embodiment, handle 12 is connected to basket 14 atlocations other than corner portions 72A, 72B, 68 such as along a sideportion 54, 56 or front portion 50.

In one embodiment, as shown in FIGS. 1-3, frame 100 of basket 14comprises a plurality of interconnected frame members comprising rearupright frame members 102A, 102B, front upright frame members 104A,104B, bottom side frame members 106A, 106B, and bottom front framemember 108. In one aspect, bottom side frame members 106A and 106B aregenerally parallel to each other and spaced from each other with bottomfront frame member 108 extending between, and being generallyperpendicular to, the bottom side frame members 106A,106B. In anotheraspect, bottom side frame members 106A, 106B are oriented at a slightangle relative to one another toward convergence in the direction offront portion 50 of cart 10.

Rear upright frame members 102A and 102B of structural frame 100 ofbasket 14 are generally parallel to and spaced from each other, andinclude a bottom end comprising lower connecting portions 92A, 92B andan upper end including upper connecting portions 82A, 82B, respectively.Bottom side frame members 106A, 106B extend generally forward frombottom end of rear upright frame members 102A and 102B to opposite endof bottom front frame member 108.

Front upright frame members 104A and 104B of structural frame 100 ofbasket 14 are generally parallel to and spaced from each other, andinclude a bottom end and an upper end including upper connectingportions 84A, 84B Bottom front frame member 108 extends between and isconnected to each respective bottom end of front upright frame members104A and 104B. In one aspect, front upright frame members 104A, 104B arealso generally parallel to and spaced from rear upright frame members102A, 102B, respectively. In another aspect, front upright frame members104A, 104B at front portion 50 of cart 10 and rear upright frame members102A, 102B at rear portion 51 of cart 10 extend generally upward at aslight angle relative to each other in a divergent orientation.

Accordingly, structural frame 100 of basket 14 defines a box-likearrangement to provide shape as well as structural strength andstability to basket 14.

In one aspect, handle 12 acts as an upper portion 101 to frame 100 ofbasket 14 with side portions 64,65 of handle frame 60 extendinggenerally parallel to, and spaced from bottom side frame members 106A,106B and with front portion 66 of handle frame 60 extending generallyparallel to, and spaced from bottom front frame member 108. In thisposition, handle 12 is connected to basket 14 at corner portions 68 and74A,74B of handle frame 60. In particular, connecting portions 69A, 69Bof each front corner portions 68 of handle 12 are secured relative toupper connecting portions 84A, 84B of front upright frame members 104A,104B of basket 14, respectively. In addition, connecting portion 74A,74B of each rear corner portions 72A, 72B of handle frame 60 are securedrelative to upper connecting portions 82A, 82B of rear upright framemembers 102A, 104B of basket 14. In this way, handle 12 is connected toand extends from basket 14 to define upper portion 101 of structuralframe 100 for basket 14.

In one embodiment, a mechanism for securing handle 12 relative to basket14 is later illustrated in association with FIG. 5.

As shown in FIGS. 1-2, structural frame 100 of basket 14 defines a sizeand shape for basket 100, and enables support of a plurality of panels11A, 110B, 112 between respective frame members 102A-108 of structuralframe 100 of basket 14. In one aspect, panels 11A, 110B, 112 areidentified in FIGS. 1-3 by dashed lines forming a generally trapezoidalor generally rectangular shape, although panels 110A, 110B, 112 are notstrictly limited to these shapes.

In one embodiment, side panel 10A extends upwardly from and is supportedby bottom side frame member 106A while extending longitudinally betweenrear upright frame member 102A and front upright frame member 104A. Sidepanel 110B extends upwardly from and is supported by bottom side framemember 106B while extending longitudinally between rear upright framemember 102B and front upright frame member 104B. Side panel 110A andside panel 110B are generally parallel to each other, and spaced fromeach other. In one aspect, side panel 110A and side panel 110B areoriented in an angled pattern of convergence toward a front portion 50of cart 10 so that front portion 50 of cart is narrower than rearportion 51 of cart 10. Front panel 112 extends upwardly from and issupported by bottom front frame member 108 while extending transverselyacross front portion 50 of cart 10 between front upright frame members104A and 104B. In one aspect, front panel 112 is positioned generallyperpendicular to side panels 110A, 110B, as well as generallyperpendicular to bottom panel 114. As shown in FIG. 3, bottom panel 114extends between, and is supported by, bottom side frame member 106A,bottom side frame member 106B, and bottom front frame member 108.

In one aspect, structural frame 100 comprises a unitary member in whichrear upright frame members 102A, 102B, front upright front members 104A,104B, bottom side frame members 106A,106B, and bottom front frame member108 extend into and blend into each other (i.e., are joined seamlesslytogether), and therefore do not comprise separate members connectedtogether via fasteners. In one aspect, each panel 110A, 110B, 112 and114 extends between, and is contiguous with, each respective adjacentframe member 102A-108 to further define this unitary member comprisingbasket 14. In this arrangement, panels 110A, 110B, 112, and 114 andframe members 102A-108 extend into one another (i.e., are joinedseamlessly together), rather than being separate members connectedsolely via fasteners as in a conventional cart construction.

Accordingly, with side panels 110A and 110B, front panel 112, and bottompanel 114 supported by structural frame 100 (including frame 60 ofhandle 12), basket 14 defines a robust container suitable for carryingitems in basket 14

Moreover, in one embodiment, the strength and stability provided bystructural frame 100 of basket 14 (including frame 60 of handle 12acting as upper portion 101 of frame 100) enable panels 110A, 110B, 112of basket 14 to have a thin wall construction. In one aspect, becausehandle 12 acts as upper portion 101 of structural frame 100 of basket14, upper edges 86A, 86B, 85 of respective side panels 110A, 110B, 112of basket 14 are sized to terminate in a low-profile thickness. Thisarrangement avoids bulky plastic or metal reinforcers at mouth 73 of thebasket 14, which simplifies basket 14 while contributing a smoother,ergonomic basket 14 having a sleek appearance and gentle tactile feel.In another aspect, the strength of frame 100 of basket 14 enablesavoiding the use of additional support members extending transversely(whether diagonal or horizontal or vertical) across a middle portion ofpanels 110A, 110B, 112.

In another aspect, side portions 65, 64 of handle frame 60 extend insubstantially the same generally vertical plane as respective sidepanels 11A, 110B, and front portion 66 of handle frame 60 extends insubstantially the same generally vertical plane as front panel 112. Thisarrangement positions handle 12 directly over the respective panels ofbasket 14 to provide direct support to these panels 110A, 110B, 112.

Additional aspects of basket 14 relating to the attributes and featuresof panels 110A, 110B, 112, and 114, as well as frame members 102A-108,are later described and illustrated in association with FIGS. 5-9.

As shown in FIG. 2, in one embodiment, basket 14 comprises defines arear opening 117 at which gate 22 of gate and seat assembly 20 ispivotally mounted via pivot mechanism 76 in handle 12, as also shown inFIG. 1. Pivot mechanism 76 enables pivotal movement of gate and seatassembly 20 relative to both basket 14 and handle 12. In thisarrangement, pivot mechanism 76 is mounted on handle 12 independent ofwheeled base 16 or basket 14. Additional aspects of gate and seatassembly 20 are later described and illustrated in association withFIGS. 10-15B.

As also shown in FIGS. 1-3, in one embodiment, basket 14 and base 16 ofcart 10 form a cantilevered arrangement in which basket 14 (with handle12 mounted thereon) is completely supported by a single axis of verticalsupport extending upwardly from base 16. This single axis of verticalsupport is provided by a pair of masts 35A, 35B of cart 10, defined by aportion of base 16 and a portion of basket 14 mated together. In oneaspect, the masts 35A,35B extend in a generally singular plane laterallyacross the rear portion of the cart 10 between side portions 52,54 ofcart 10. This arrangement enhances access to tray 28 (FIG. 1) of base16, eliminates extra, unsightly vertical supports, and maintains a largeweight bearing capacity of cart 10. In another aspect, masts 35A,35B arepositioned adjacent rear portion 51 of cart 10 to support basket 14(e.g. a front portion of basket 14) in a vertically spaced relationshipover base 16 (e.g., a front portion of base 16) adjacent the frontportion 50 of cart 10.

In one aspect, mast 35A comprises lower connecting portion 92A of basket14 as mated with base support 36A of base 16 and mast 35B compriseslower connecting portion 92B of basket 14 as mated with base support 36Bof base 16. Additional aspects of masts 35A,35B of cart 10 and thecantilever support they provide to basket 14 are described after afurther description of wheeled base 16, in association with FIG. 2.

As shown in FIG. 2, base 16 is configured to support basket 14 andcomprises frame 200 including legs 34A, 34B for supporting wheels 32(shown in FIGS. 1 and 3). Frame 200 comprises a unitary member includinga front portion 210, side portions 212A, 212B, front wheel supportmember 213 and rear portion 214. Front wheel support 213 extendslaterally between opposite side portions 212A and 212B and is positionedto support front wheels 30 (shown in FIGS. 1 and 3). Rear portion 214 offrame 200 of base 16 comprises a support member that extends laterallybetween opposite side portions 212A, 212B at an end of frame 200longitudinally spaced from front portion 210 of frame 200. Rear portion214 provides lateral strength and stability to base supports 36A, 36B,as well as lateral strength and stability to legs 34A, 34B. In oneaspect, rear portion 214 extends in substantially the same plane (B) aslegs 34A, 34B. In one aspect, rear portion 214 comprises a shelf 215 andridge 216, which together provide a horizontal support for tray 28.

In one embodiment, base supports 36A, 36B of base frame 200 alsocomprise a pair of generally vertical trunks 240A, 240B, with each trunk240A, 240B extending upward from a respective side portion 212A, 212B offrame 200. Each trunk 240A,240B comprises prongs 244A, 244B,respectively, that extend outwardly and upwardly from base portion242A,242B. Base supports 36A, 36B and side portions 212A, 212B togetherform a junction 220A, 220B and also define an apex 222 from which legs34 extend to rotatably mount support wheels 32.

As further shown in FIG. 2, prongs 244A, 244B of base supports 36A,36Bare aligned for insertion into receiving portions 243A, 243B (shown inphantom) of rear upright frame members 102A, 102B via lower connectingportions 92A, 92B of basket 14. In one aspect, receiving portions 243A,243B of basket 14 are sized and shaped (including a length) to enableprongs 244A, 244B to extend within a substantial length or a majority ofa length of rear upright frame members 102A, 102B of basket 14 tostrengthen the interconnection of basket 14 relative to base 16.Accordingly, in one aspect, prongs 244A, 244B have a lengthsubstantially the same as a slot defined by receiving portions 243A,243B of basket 14.

This arrangement enhances the ability of mast 35A, 35B and base 16 tomaintain the cantilevered arrangement of basket 14 in a generallyhorizontal position over base 16 while providing a large weight bearingcapacity for basket 14. In one embodiment, mast 35A, 35B, in cooperationwith other structural components of cart 10, enables supporting a weightof up to 600 pounds within basket 14.

As shown in FIG. 1, in one embodiment, each mast 35A, 35B comprises arear portion 245 and a front portion 246. As shown in FIG. 2, rearportion 245 defines a generally straight, generally continuous portionfor each mast 35A,35B. For example, rear portion 245 of mast 35Aincludes rear straight portion 247A of base support 36A, 36B extendingupward to straight portion 248 of lower connecting portion 92A, 92B ofbasket 14, and along the generally straight, rear upright frame member102A, 102B of basket 14. Accordingly, rear portion 245 of masts 35A, 35Bof cart 10 and rear upright frame members 102A, 102B of basket 14 arealigned in substantially the same plane A (shown in FIG. 1).

As shown in FIG. 1, front portion 246 of mast 35A, 35B faces in adirection generally away from the rear portion 245 and defines agenerally 180 degree concave curved member on an opposite side of mast35A,35B relative to rear portion 245. As shown in FIG. 2, in one aspect,front portion 246 of mast 35A, 35B comprises curved portion 249 of basesupport 36A, 36B and front curved portion 251 of lower connectingportion 92A, 92B of basket 14. In one aspect, front portion 246 of mast35A,35B defines a generally smooth curve, substantially minimizingdiscontinuities along front portion 246 to significantly reduce stressconcentrations on mast 35A, 35B. This arrangement enhances the relativestrength of mast 35A,35B to provide a cantilevered support by omittingconventional sharp interior junctions and corners along a verticalsupport for a basket. Accordingly, a rear portion 245 of mast 35A, 35B(defining a generally straight, rearwardly tilting member) and a frontportion 246 of mast 35A, 35B (defining a concave curved member facingaway from the rear portion) define substantially different shapes fromeach other to provide different functions that contribute together tostrengthen mast 35A, 35B as a cantilever support for basket 14.

As shown in FIGS. 1-2, frame 200 of base 16 also comprises legs 34A, 34Bwhich extend rearwardly and downwardly from apex 222 of frame 200. Inone embodiment, legs 34A, 34B form a contiguous extension of frame 200so that legs 34A, 34B and the other portions of base frame 200integrally form a single unitary member. In another embodiment, legs34A, 34B each form a separate member from the remainder of base frame200 and are connected to base frame 200 via fasteners, adhesive means,etc. In one embodiment, each leg 34A,34B extends away from base frame200 in a direction generally opposite front portion 50 of cart 10.

In one aspect, each leg 34A,34B comprises a generally straight memberthat extends in a generally single plane (B) which extends, from apex222, at a generally obtuse angle (α1) relative to rear portion 245 ofmast 35A,35B (or relative to rear upright frame member 102A, 102B). Inone aspect, this angle (α1) is about 120 to 140 degrees. In anotheraspect, this angle (α1) is about 130 degrees. In another aspect, eachleg 34A, 34B extends at a generally obtuse angle (α2) relative to agenerally horizontal plane (H) that extends generally parallel relativeto side portions 212A, 212B of frame 200 of base 16. In one aspect, eachleg 34A,34B extends at a generally obtuse angle relative to a planethrough which the base 16 extends adjacent the front portion 50 of cart10 with the plane being a generally horizontal plane or a non-horizontalplane. In one aspect, this angle (α2) is about 120 to 140 degrees. Inanother aspect, this angle (α2) is about 130 degrees. Accordingly, inthis aspect, each leg 34A also forms a generally acute angle (e.g. 40degrees) relative to substantially vertical plane V shown in FIG. 1.

In another aspect, each rearwardly angled leg 34A, 34B (and supportedwheel 32) provides an anchor point providing leverage, in cooperationwith rearwardly tilted mast 35A, 35B, to counteract a downwardgravitational force of items in basket 14 as represented by arrow F inFIG. 2).

In one embodiment, each wheel 32 (as supported by legs 34A, 34B)comprises a plastic material formed into a unitary member. In oneaspect, each wheel 32 comprises a nylon material. In another aspect,each wheel comprises a HDPE material. In another embodiment, wheels 32comprises a rubber material/or a metal material, or a combinationthereof.

In another embodiment, besides rear wheels 32 or front wheels 30, othermeans of locomotion (e.g., rollers, slides, etc) are mounted on base 16to enable transit of cart 10.

FIG. 4 is an enlarged perspective view of leg 34A and wheel 32,according to one embodiment of the invention, and which also representsa corresponding structure for leg 34B. As shown in FIG. 4, leg 34Acomprises main portion 250 and opposed flanges 254 and 256. Main portion250 extends from frame 200 (shown in FIGS. 1-2) and also defines aribbed inner portion 252 configured to provide strength to leg 34A byusing less material and while maintaining a generally uniform wallthickness for main portion 250 during molding. Opposed flanges 254 and256 of legs 34A, 34B are sized, shaped, and positioned to straddle wheel32 for rotatably mounting of wheel 32 at holes 257 via pin 258, or asimilar rotational mechanism or axle mechanism. In one aspect, wheel 32is generally parallel to and sandwiched between the respective flanges254 and 256. Outer portion 259 of main portion 250 comprises a generallysmooth surface. In one aspect, flange 256 acts as both a protective anddecorative shroud for wheel 32, as shown in FIG. 1. In another aspect,flange 256 at least partially covers wheel 32.

In one aspect, as also shown in FIG. 4, wheel 32 comprises a generallydisc shaped core 260 made from a plastic material and a tread 262 thatslip fits over an outer surface of core 260 with tread 262 being made ofa non-slip material (e.g., rubber or other materials) to providetraction for wheels 32.

FIG. 5 is a partial perspective view illustrating assembly of handle 12relative to basket 14, according to one embodiment of the invention. Asshown in FIG. 5, rear corner portion 72A of handle 12 comprises frame 60including pivot mechanism 76 with sleeve 77 and including downwardlyprotruding extension 74A including tongue 270.

In one embodiment, basket 14 comprises upper connecting portion 82A(extending generally upward from rear upright frame member 102A adjacenttop edge 86A of basket 14) that defines slot 272 via side wall 274. Inone embodiment, tongue 270 is adhesively secured within slot 272 ofupper connecting portion 82A to permanently secure handle 12 relative tobasket 14. In another embodiment, tongue 270 comprises hole 280 thatextends transversely through tongue 270 and connecting portion 82Acomprises hole 282 extending through sidewall 274. In one aspect, holes280 and 282 are sized and positioned on the respective tongue 270 andconnecting portion 82A of basket 14 to align with each other when tongue270 is fully inserted into slot 272 to form a single hole for receivinga securing pin 284 that is slidably insertable into holes 280, 282.

In another embodiment, tongue 270 omits hole 280 and connecting portion82A of basket 14 omits hole 282 and other forms of connectors,fasteners, adhesives, etc, are used to secure handle 12 relative tobasket 14. In one aspect, handle 12 is permanently secured to basket 14while in other aspects, handle 12 is removably secured relative tobasket 14. In this latter aspect, removably securing handle 12 to basket14 enables replacing a handle 12 on a basket 14 when handle 12 needsrepair or is replaced for other reasons, such as changing a handle ofone color for another color or changing a handle of one shape foranother shape.

In another aspect, other components such as base 16, basket 14, gate andseat assembly 20, tray 28, wheels 30 and 32 are also constructed to beremovably securable relative to one another, thereby enablinginterchangeability of one component for another. For example, aparticular component having one color or shape is exchangeable for asimilar component having a different color or different shape, or merelyfor maintenance purposes.

In one embodiment, a structure as described in association with FIG. 5(including alternative embodiments and aspects described) is applied forconnecting front corner portions 68 of front upright frame members 104A,104B of basket 14.

FIGS. 6, 7, and 8 illustrate various aspects of basket 14, according toembodiments of the invention. FIG. 6 is an enlarged partial perspectiveview of a rear portion 51 of basket 14, according to one embodiment ofthe invention, illustrating a rear corner portion of basket 14 includingbottom panel 114, side panel 110B, and rear upright frame member 102Balong with additional related components. In one aspect, FIG. 6 alsorepresents a corresponding structure on an opposite side portion 54 ofbasket 14 defined by bottom panel 114, side panel 110A, and rear uprightframe member 102A (shown in FIGS. 1-3), except in a mirroredorientation.

As shown in FIG. 6, side panel 110B of basket 14 extends generallyvertically upward from bottom panel 114 of basket 14 which extendsgenerally horizontally across to side panel 110A of basket 14 (shown inFIGS. 1-3). In one aspect, basket 14 comprises a rear edge 134 of bottompanel 114 including ridge 135 formed to limit rearward motion of abottom of gate 22 of gate and seat assembly 20 (shown in FIG. 11). Inone aspect, bottom panel 114 also comprises at least one hole 136including recess 138 for receiving tabs 310 of a gate 22 (described andshown later in FIGS. 10-11) when gate 22 is in a down position with hole136 limiting further rearward movement of gate 22 relative to opening117 of basket 14.

As further shown in FIG. 6, basket 14 comprises side panel 110Bextending forward from rear upright frame member 102B in a generallyvertical plane toward front upright frame member 104B with junction 126defining a transition between side panel 110B and rear upright framemember 102B. As also shown in FIG. 6, basket 14 comprises bottom sideframe member 106B extending forward from rear upright frame member 102Bin a generally horizontal plane with bottom side frame member 106Bdefining a junction between bottom panel 114 and side panel 110B ofbasket 14. As shown in FIG. 6, side panel 110B has a generally uniformwall thickness and defines a generally continuously smooth inner surface121 and outer surface 122 of side panel 110B.

In one embodiment, as shown in FIG. 6, rear upright frame member 102Bhas a width W3 and side panel 110B has a width W4 that is substantiallydifferent from and substantially less than width W3. In one aspect, sidepanel 110B has a width W4 about three times less than a width W3 of rearupright frame member 102B. In other aspect, side panel 110B has a widthW4 that is more or less than three times less than width W3.

In one embodiment, as also shown in FIG. 6, upper connecting portion 82Bof rear upright frame member 102B of basket 14 comprises a solid member,as shown in FIG. 6, that provides a contact area 132 for fasteningrelative to connecting portion 74 of handle 12 (FIGS. 1-3). In anotherembodiment, upper connecting portion 82B of rear upright frame member102B forms a slot to receive a portion of handle 12, in a mannersubstantially the same as slot 272 shown in FIG. 5. In anotherembodiment, the entire rear upright frame member 102B of basket 14,including connecting portion 82B, defines a hollow thin walled structuresubstantially the same as structure 180 later described and illustratedin association with FIG. 9.

FIG. 7 is an enlarged partial perspective view of a front portion 50 ofbasket 14, according to one embodiment of the invention, illustrating afront corner portion of basket 14 including bottom panel 114, side panel110B, and front upright frame member 104B along with additional relatedcomponents. In one aspect, FIG. 7 also represents a correspondingstructure on an opposite side portion 54 of basket 14 defined by bottompanel 114, side panel 110A, and front upright frame member 104A (shownin FIGS. 1-3), except in a mirrored orientation. In one aspect, frontpanel 112 extends generally vertically upward from frame member 108 ofbasket 14 and laterally between front upright frame member 104B andfront upright frame member 104A of basket 14 (not shown in FIGS. 1-3).In one aspect, front upright frame member 104B comprises a junctionbetween side panel 110B and front panel 112 of basket 14. As furthershown in FIG. 7, basket 14 comprises side panel 110B extendingrearwardly from front upright frame member 104B with junction 140defining a transition between side panel 110B and front upright framemember 104B.

In one embodiment, as shown in FIG. 7, front upright frame member 104Bhas a thickness or a width (W5) and side panel 110B has a width (W4)substantially different from width W5. In one aspect, side panel 110Bhas a width W4 at least about two times less than a width W5. In otheraspect, side panel 110B has a width W4 that is more or less than twotimes less than width W5.

In one embodiment, upper connecting portion 84B of front upright member104B of basket 14 comprises a solid member, as shown in FIG. 7, thatprovides a contact area 144 for fastening relative a portion of handle12. In another embodiment, connecting portion 84B forms a slot toreceive a portion of handle 12, in a manner substantially the same asslot 272 shown in FIG. 5. In another embodiment, the entire frontupright frame member 104B of basket 14, including upper connectingportion 84B, defines a hollow thin walled structure substantially thesame as structure 180 later described and illustrated in associationwith FIG. 9.

In one aspect, as shown in FIG. 7, front upright frame member 104Bcomprises a solid outer wall surface 145 (i.e., without holes) at bothan interior surface of basket 14 and exterior surface of basket 14. Inthis aspect, front upright frame member 104B comprises a substantiallydifferent structure from a thin wall structure of side panel 110B andfront panel 112 that includes a plurality of holes 113. Front uprightframe member 104B defines a member that extends as a curved memberbetween side panel 110B and front panel 112, which are generallyperpendicular to each other. This curved member provides a gentlearcuate shape, unlike conventional cart baskets having relatively sharpcorners.

As shown in FIGS. 1-7, basket 14 including frame members 102A-108 andpanels 10A, 110B, 112, comprises a generally continuously smoothsurface, that is generally free of sharp protrusions, edges, ribs, etc,so as to be comfortable for contact with a body of a consumer. In oneaspect, as shown throughout FIGS. 1-8, each side panel 110A, 110B, andfront panel 112 (also an upper surface of bottom panel 114) comprise agenerally contiguous member 111 forming a pattern of holes 113. In oneaspect, holes 113 are round, while in other aspects, one or more holeshave other shapes, instead of round holes, such as squares, diamond,triangular, elliptical, etc.

In one embodiment, the relative large quantity and relatively large sizeof holes 113 relative to member 111 minimizes wind loading of basket 14,and therefore cart 10. Accordingly, cart 10 is resistant to unwantedmovement caused by the wind in an outdoor environment.

FIG. 8 is an enlarged partial bottom plan view of basket 14, accordingto one embodiment of the invention, illustrating a rear bottom corner ofbasket 14 including bottom panel 114, side panel 110B, and rear uprightframe member 102B along with additional related components. In oneaspect, FIG. 8 also represents a corresponding structure on an oppositeside portion 54 of basket 14 defined by bottom panel 114, side panel110A, and rear upright frame member 102A (shown in FIGS. 1-3), except ina mirrored orientation.

In one aspect, as shown in FIG. 8, lower connecting portion 92B ofbasket 14 extends outwardly and downwardly from bottom panel 114 ofbasket 14 and from rear upright frame member 106B of basket 14(previously shown and described in association with FIGS. 1-3). Lowerconnecting portion 92B is sized, shaped, and positioned relative tobasket 14 for mating with base support 36B of base 16 (FIGS. 1-3) forconnecting basket 14 to base 16. By forming an extension of basket 14,lower connecting portion 92B forms a portion of mast 35B, thereby addingstrength and stability to the cantilevered arrangement of basket 14relative to base 16 as previously described. In one aspect, a curvedportion 170 defines a smooth transition and additional support betweenlower connecting portion 92B, bottom side frame member 106B, and bottompanel 114.

As shown in FIG. 8, in one embodiment, rear upright frame member 102Bcomprises lower connecting portion 92B (FIG. 1) that comprises slot 160defined by side wall 162 for receiving prong 244B of base frame 200(FIG. 2) to secure basket 14 and base 16 together. In anotherembodiment, the entire rear upright frame member 102B of basket 14,including connecting portion 92B, defines a hollow thin walled structuresubstantially the same as structure 180 later described and illustratedin association with FIG. 9. In this embodiment, this hollow structurecorresponds to receiving portion 245B of rear upright frame member 102Bas previously described (shown in FIG. 2). In addition, in this latterembodiment, the hollow structure of rear upright frame member 102B alsodefines slot 160.

In one embodiment, lower connecting portion 92B is secured to prong 244Bof base 16 (FIG. 2) via a pin/hole combination, substantially the sameas the structure shown in FIG. 5 for connecting portion 82B of basket14. In other embodiments, other fasteners, adhesives, and/or meldingtechniques are applied to secure prong 244B of base frame 200 withinslot 160 of lower connecting portion 92B.

As illustrated throughout FIGS. 1-8, in one aspect, basket 14 comprisesa generally continuously smooth surface that is achieved, in part, by athin wall construction of panels 110A, 110B, and front panel 112 inwhich a sheet member 111 defining panels 110A, 110B, 112 extends in agenerally singular plane. In one aspect, sheet member 111 and inner edge115 of holes 113 formed in member 111 extend in substantially the sameplane. This arrangement, in combination with each panel 110A, 110B, 112having a minimal wall thickness, forms a generally rib-less structurefor panels 110A, 110B, 112. Accordingly, each member 111 including holes113 helps to avoid inadvertently catching items (e.g., hangers,clothing, etc.) against the surface of panels 110A, 110B and 112 orwithin holes 113 of basket 14.

In another embodiment, this thin wall structure of panels 110A, 110B,112 (as well as the vertically extending, generally smooth surfaces offrame members 102A-108) also enhances watershed properties of shoppingcart 10 by maximizing a surface area of basket 14 that extends in agenerally vertical plane and minimizing a surface area of generallyhorizontal surfaces of side panels 110A, 110B, 112 of basket 14.Accordingly, side wall panels 110A, 110B and front panel 112 are shapedand oriented to shed water. This arrangement facilitates water drainingoff basket 14 via gravitational force, thereby enabling basket 14 to dryquickly. Moreover, in another aspect, the generally smooth surface ofpanels 110A, 110B, 112, and frame members 102A-108, along with theirgenerally vertical orientation and thin wall structure, facilitate quickdrying of cart 10 with a towel or blower, if desired.

FIG. 9 is a partial sectional view of a bottom side frame member 106A ofbasket 14, according to one embodiment of the invention. In one aspect,FIG. 9 also represents a corresponding structure for one or more othercomponents of cart 10, including all or a portion of frame 200 of base16, one or more frame members 102A-108 of basket 14, or all or a portionof frame 60 of handle 12.

As shown in FIG. 9, bottom side frame member 106A of basket 14 forms ajunction between side panel 110A and bottom panel 114 of basket 14. Inone embodiment, bottom side frame member 106A comprises a hollow, thinwall structure 180 including side wall 184 defining hollow channel 182.In one aspect, channel 182 is not limited to the particular shape shownin FIG. 9, but can comprise a generally circular cross-sectional shape,a generally triangular cross-sectional shape, or other shapes. In oneembodiment, channel 182 comprises an empty cavity while in anotherembodiment, channel 182 is filled with a gas. In another embodiment,channel 182 is filled with a solid material different than the materialforming side wall 184. In another embodiment, side wall 184 comprises afirst plastic material including an additional material, such as aglass-type material (e.g., fiberglass strands), impregnated throughoutthe first plastic material to increase the strength and/or decrease theweight of side wall 184.

In another embodiment, bottom side frame member 106A is a solid membermade of a single material so that no channel 182 is defined in member106A. In another embodiment, bottom side frame member 106A comprises anadditional internal structural member embedded within member 106A, suchas a metal rod or component to increase the strength of bottom sideframe member 106A while decreasing its size and/or weight.

As further shown in FIG. 9, bottom panel 114 has a width (W6) greaterthan a width (W4) of side panel 110A to enable a bottom panel 114 ofcart to support the weight of heavy items within cart 10. In one aspect,bottom panel 114 comprises a generally smooth surface 185 on an interiorof basket 14 and includes ribbed holes 187 on bottom surface 188 ofbottom panel 114. In one aspect, ribbed holes 187 define a circular ribextending downwardly, thereby providing additional strength andstability to bottom panel 114 to increase the weight bearing capacity ofbottom panel 114.

In addition to embodiments of basket 14 having a hollow thin wallstructure, other embodiments of handle 12 and/or base 16 also comprise ahollow, thin wall construction substantially the same as for basket 14.Accordingly, in one embodiment, frame 60 of handle 12 comprises ahollow, thin walled construction. In one aspect, only a portion of frameof handle 12, such as rear portion 62 of handle frame 60, comprises ahollow, thin walled construction. In another embodiment, one or moreframe members 102A-108 of frame 100 of basket 14 comprise a hollow, thinwalled construction. In one aspect, only one or two portions of a frameof basket 14, such as side portion 106A of basket frame (FIG. 8),comprises a hollow, thin walled construction while other portions ofbasket frame 100 comprise a solid member.

Accordingly, in some embodiments, one or more portions of each of handle12, basket 14, and/or base 16 comprise a hollow, thin wall constructionwhile in other embodiments, none of the handle 12, basket 14, and base16 comprise a hollow, thin wall construction.

In one embodiment, a hollow thin walled construction substantially thesame as shown in FIG. 9, is made via a gas-assist mechanism applied to amolten plastic mixture to displace the plastic at an interior of a moldto form the hollow thin wall construction. In one embodiment, handle 12,basket 14, and/or base 16 are made from a gas-assist injection moldingprocess, such as a plastic expulsion molding process available fromCinpres Gas Injection Limited of United Kingdom. In another embodiment,other injection molding systems and methods are employed forconstructing the hollow, thin wall structure or for constructingnon-hollow portions of base 16, basket 14, and/or handle 12.

FIGS. 10-13B illustrate a gate and seat assembly, according to oneembodiment of the invention. FIG. 10 is a top plan view of gate and seatassembly 20, according to one embodiment of the invention. As shown inFIG. 10, gate and seat assembly 20 comprises gate 22, seat 24, and backrest 26. Seat 24 is sized and shaped to support a child or small items.In one embodiment, the entire gate and seat assembly 20, or onlyportions thereof (e.g. seat 24), is made of a plastic material such as anylon material, a HDPE material, or other thermoplastic material.

In one aspect, back rest 26 comprises a curved surface to bettercomplement the shape of a child's back while sitting on seat 24. Inanother aspect, back rest 26 comprises a member defining a generallycontinuous smooth contact surface 330 including member 331 extendingbetween and defining holes 332. This curved surface and/or smoothcontact surface further contributes to the ergonomic environmentproduced by the various consumer-friendly features of cart 10.

In one embodiment, seat 24 comprises base member 362 and flap 370. Arear edge of base member 362 is pivotally mounted to gate 22 at pivotmechanism 364 and flap 370 is pivotally mounted to base member 362 viapivot mechanism 372. In one aspect, a generally bowl shaped depression373 is formed via recess 371 in base member 362 and flap 370, andcomprises base depression portion 374A and flap depression portion 374B.Interaction of flap 370 and base member 362 of seat 24 are furtherdescribed and illustrated later in association with FIGS. 13A-13B.

As shown in FIG. 11, gate 22 defines opening 304 for legs of a childwhen sitting on seat 24. Flap 370 is pivotally movable upward (into agenerally vertical position) to block openings 304 or pivoted downward(into a generally horizontal position) to form a portion of seat 24, asdescribed in association with FIGS. 10 and 13A-13B. In one aspect,depression 373 provides a more comfortable resting place for a bottom ofa child. In one aspect, as shown in FIG. 10, an apex 375 of depression373 is adjacent leg openings 304 (at a rear edge of base member 362)while a mouth 377 of depression 373 is adjacent to back rest 26 (at afront edge of base member 362). In one aspect, apex 375 comprises an atleast partially straight portion defining a generally flat edge. Inanother aspect, mouth 377 comprises a substantially straight portiondefining a generally flat edge.

As also shown in FIG. 11 via directional arrows A and B, seat 24 andback rest 26 are pivotally movable relative to each other, with seat 24being pivotally movable relative to gate 22, and back rest 26 beingpivotally movable relative to gate 22. In use, upon rearward pressureplaced on backrest 26 toward gate 22, seat 24 begins to slide upward andpivot relative to tracks 320A of pivot mechanism 364 in gate 22, andlegs 340 of backrest 26 begin to pivot at pivot mechanism 312 of gate 22enabling upper portion of backrest 26 to move toward gate 22. At thissame time, seat 24 also pivots at pivot mechanism 386 relative to backrest 26, enabling back rest 26 to collapse against both seat 24 and gate22. In addition, as previously described in association with FIGS. 1 and3, gate 22 is pivotally movable via pivot mechanism 76 on handle 12relative to opening 117 at rear portion of basket 14 (FIG. 3) between aforward, nesting position (not shown) and a rearward position shown inFIGS. 1 and 10.

Gate 22 also comprises a bottom edge 308, which includes tabs 310. Tabs310 mate with recessed holes 136 in bottom panel 114 of basket 14 (aspreviously described in association with FIG. 6) when gate 22 is in theclosed position shown in FIG. 1 or 10.

As also shown in FIG. 11, in one embodiment, a rear surface of backrest26 comprises holes 352 defined by ribbed walls 350 for providingstrength and stability to backrest 26, with holes 352 generallycorresponding to holes 332 on a front surface of backrest 26.

As shown in FIG. 12, back rest 26 comprises corner supports 382 andpivot mechanism 386 (also shown in FIG. 11) for supporting a corner 388of base member 362 of seat 24 (shown in FIG. 13A) when gate and seatassembly 20 are in the open, in-use position, as shown in FIG. 10.

FIG. 13A is a perspective view of flap 370 and base member 362 of seat24, according to one embodiment of the invention. FIG. 13B is asectional view of FIG. 13A further illustrating flap 370.

As shown in FIG. 13A, flap 370 and base member 362 together comprise anassembly enabling flap 370 to be pivotally movable upward (to generallycover leg openings 304) and pivotally movable downward to be removablyreceived within recess 376 of base member 362, which is sized and shapedto receive flap 370. In one aspect, recess 376 of base member 362 has agenerally rectangular shape substantially matching a generallyrectangular shape of flap 370.

In another aspect, when placed in a down position, a top surface of flapdepression portion 374B of flap 370 mates in a generally flushrelationship with a top surface of base depression portion 374A ofrecess 371.

As shown in FIG. 13A, if flap 370 were placed in a raised position bypivoting flap 370 relative to base member 362 via pivot mechanism 372,base depression portion 374C of recess 371 would be revealed. Basedepression portion 374C comprises a generally concave curved surface forreceiving a generally convex shaped bottom surface 374D of flap 370(shown in FIG. 13B). Base depression portion 374C is superimposed overand intersects with generally rectangular shaped recess 376, sized andshaped to receive flap 370.

As shown in FIG. 13B, bottom surface 374D of flap 370 is sized andshaped to reciprocally mate with base depression portion 374C of basemember 362, thereby enabling base depression portions 374B and 374A tomate with each other (at recess 376 and 371) in a generally flush manneras shown in FIG. 10 to comprise a substantially continuous curvedconcave surface defining depression 373.

FIG. 14 is an enlarged partial perspective view of a backrest 400 of ashopping cart, according to one embodiment of the invention. As shown inFIG. 14, backrest 400 comprises a backrest of a child seat assembly of ashopping cart, such as gate and seat assembly 20 previously describedand shown in association with FIGS. 1-12. Backrest 400 comprisesnoteholder 410 formed in a front surface (or a back surface) at upperportion 402 of backrest 400. In one embodiment, noteholder 410 is sized,shaped, and positioned to releasably hold a notecard 412 (or piece ofpaper, shopping list, or other article) relative to backrest 400 for theconvenience of the consumer. In one aspect, noteholder 410 is disposedon upper portion 402 of backrest 400 to enable a consumer to view ashopping list in a convenient location without having to carry theshopping list in their hands.

In one embodiment, noteholder 410 comprises a recess 420 formed inbackrest 400 and a finger 422 protrudes upwardly adjacent to, and spacedfrom, recess 420 to provide adequate space to slip a shopping list orother paper between recess 420 and finger 422. The curve of recess 420and the relatively close proximity of finger 422 enable a piece of paperto be held in place by inducing a curve in the paper to effectivelypress the paper against recess. In one aspect, finger 422 comprises asingular protrusion while in other aspects, finger 422 comprises morethan one protrusion in close proximity to recess 420. Moreover, in otheraspects, the relative placement of finger 422 and recess 420 arereversed (relative to a front-to-rear orientation of the cart). In oneaspect, recess 420 comprises hole 430 to facilitate molding of finger422 relative to recess 420.

FIGS. 15A-15B are perspective views of a cupholder and seat assembly500, according to one embodiment of the invention. As shown in FIG. 15,assembly 500 comprises base member 502 and flap 504, which togetherdefine a generally bowl-shaped depression 506, and cupholder 520. In oneembodiment, assembly 500 including both base member 502 and flap 504 aremade of a plastic material such as nylon or HDPE material. In oneembodiment, base member 502 comprises recess 505 and pivot mechanism 507(like pivot mechanism 372 in FIG. 10) pivotally mounting of flap 504relative to base member 502.

In one aspect, as shown in FIG. 15B, cupholder 520 comprises a hole 526sized and shaped for receiving and removably holding in place a beveragecup 530. In one aspect, cupholder 520 comprises a ring 528 which acts asa rim that is sized and shaped to substantially match the size and shapeof hole 526, and configured to releasably capture or hold beverage cup530 securely in a generally vertically supported position relative tobase member 502 based on the relative diameters of cup 530 and hole 526.

In one aspect, ring 528 defines an inner surface for holding beveragecup with the inner surface extending generally vertically relative tobase member 502. In one aspect, ring 528 of cupholder 520 is made of aplastic material such as a nylon material or a HDPE material. In anotheraspect, ring 528 comprises a material, such as rubber, to frictionallyengage the sides of beverage cup 530.

As shown in FIGS. 15A-15B, flap 504 is pivotally movable between a downposition shown in FIG. 15A that blocks access to hole 526 of cupholder520 and an up position shown in FIG. 15B that enables access to hole 526of cupholder 520 while also at least partially blocking leg openings304.

In one embodiment, as shown in FIG. 15B, flap 504 comprises a cup cover522A defining a recess in a bottom surface of flap 504 and which forms acorresponding raised surface on a top surface of flap 504, as shown inFIG. 15A. The cup cover is sized and shaped, having a diameter and adepth, to generally correspond to a mouth of beverage cup 530 and toreceive (and encompass) a mouth of beverage cup 530 to the extent towhich beverage cup 530 extends above ring 528 of cupholder 520.

In one embodiment, base member 502 and flap 504 comprise substantiallythe same attributes and features as base member 362 and flap 370 ofFIGS. 10-13B, except for base member 502 additionally including hole 526and ring 528 of cupholder 520 and flap 504 comprising a side portion 524(identified via a boundary line on flap 504 in FIG. 15A) sized andshaped to cover hole 526 of cupholder 520 when flap 504 is a downposition. Accordingly, when flap 504 is in its down position (FIG. 15A),flap 504 mates within recess 505 so that an upper surface of flap 504 isflush with an upper surface of base member 502. In this embodiment, flap504 has a width represented by L that is substantially wider than awidth corresponding to the width of both leg openings 304, with sideportion 524 corresponding to the extra width of flap 504 relative toconventional flaps having a width corresponding only to a width of thepair of leg openings 304.

In another aspect, base member 502 comprises a main seat portion (forsupporting a child) having a width generally corresponding to a width offlap 504 and a side portion having a width generally corresponding to awidth of side portion 524 of flap 504 wherein the side portion of thebase member 502 is positioned laterally of leg openings 304.

In another embodiment, side portion 524 is separate from flap 504 andside portion 54 is pivotally movable independent of flap 504 so thatplacing side portion 524 in the up position provide access to hole 526but does not block leg openings 304 when flap 504 is in the downposition. In this embodiment, side portion 524 has a width that is wideenough to block access to hole 526 of cupholder 512 when independentlymovable side portion 524 is in the down position (FIG. 15A).

In one embodiment, recess 505 of base member 502 is sized and shaped ina generally rectangular pattern substantially the same as shown in FIG.13A. In another embodiment, recess 505 of base member 502 is sized andshaped in a generally rectangular pattern that substantially matches thesize and shape of flap 504.

In one embodiment, ring 528 is the sole structure of cupholder 520 thatsecurely holds beverage cup 530. In another embodiment, in addition toor in place of ring 528, cupholder 520 comprises a bottom frame member540 (shown in phantom) for supporting beverage cup 530 and which is madeof a plastic material or other material and configured for operationwith a collapsible gate and seat assembly.

Embodiments of the invention enable convenient, comfortable, andefficient shopping by a consumer in a store via a panoramic handle, acantilevered basket, and wheeled base, among other features.

Although specific embodiments have been illustrated and describedherein, it will be appreciated by those of ordinary skill in the artthat a variety of alternate and/or equivalent implementations may besubstituted for the specific embodiments shown and described withoutdeparting from the scope of the present invention. This application isintended to cover any adaptations or variations of the specificembodiments discussed herein. Therefore, it is intended that thisinvention be limited only by the claims and the equivalents thereof.

1. A shopping cart comprising: a base extending generally horizontallybetween a front portion and a rear portion of the cart and including aplurality of wheels for supporting the cart on a surface; a pair ofmasts extending generally vertically upward from the base in a generallysingular plane extending laterally across the rear portion of the cart,each mast being made of a plastic material and including: a rear portionfacing the rear portion of the cart and defining a generally straightsurface; and a front portion facing in a direction generally oppositethe rear portion of the respective mast and defining a generally concavecurved portion; and a basket including a front portion and a rearportion with the rear portion of the basket connected to the base viathe pair of masts to support the front portion of the basket in avertically spaced relationship over the base adjacent the front portionof the cart.
 2. The shopping cart of claim 1 wherein the base, thebasket, and each mast is made of at least one of a nylon material and ahigh density polyethylene material.
 3. The shopping cart of claim 1wherein the basket comprises a pair of generally vertical rear framemembers adjacent the rear portion of the basket and being laterallyspaced apart on opposite sides of the rear portion of the basket, eachgenerally vertical rear frame member defining a slot; wherein the basecomprises: a frame; and a pair of generally vertical supports extendinggenerally upward from the frame and being laterally spaced apartadjacent the rear portion of the cart; wherein each mast comprises acombination of one of the respective generally vertical supports of thebase slidably inserted and secured within the slot of one of therespective generally vertical rear frame members of the basket.
 4. Theshopping cart of claim 3 wherein each slot has a length extending alonga majority of a length of the respective rear frame member of thebasket, and each vertical support of the base comprises an elongateprong having a length substantially the same as the length of the slotin the respective rear frame member of the basket.
 5. The shopping cartof claim 3 wherein the rear portion of each mast comprises: a rearsurface portion of the respective rear frame member of the basket; and arear surface portion of the respective vertical support of the base. 6.The shopping cart of claim 1 wherein the generally concave curvedportion of the front portion of the mast comprises a generally 180degree curve.
 7. The shopping cart of claim 1 wherein the plurality ofwheels comprises: at least one front wheel mounted to the base adjacentthe front portion of the cart; and a pair of rear wheels positionedadjacent the rear portion of the cart, with each rear wheel supportedvia a respective leg extending from the base in a direction generallyaway from the base and generally opposite the front portion of the cart,wherein each respective leg is oriented in a generally obtuse anglerelative to a plane through which the base extends adjacent the frontportion of the cart.
 8. The shopping cart of claim 7 wherein thegenerally obtuse angle is between about 120 and about 140 degrees. 9.The shopping cart of claim 7 wherein the pair of legs and the base forma single unitary member, and each leg comprises a pair of spaced flangesin which each one of the respective rear wheels is rotatably mounted.10. The shopping cart of claim 9 wherein each rear wheel is made from aplastic material.
 11. The shopping cart of claim 1 and furthercomprising a handle separate from and independent of the base, thehandle being connected to an upper portion of the basket separate fromand independent of the mast.
 12. A base for a shopping cart comprising:a single unitary member made from a plastic material including: a frontportion configured to support at least one front wheel; a rear portionconfigured to support a basket extending in a generally verticallyspaced relationship above the front portion of the single unitarymember; and a pair of legs extending from the rear portion in adirection generally opposite and away from the front portion of thesingle unitary member, each leg configured to rotatably support a rearwheel and the pair of legs being laterally spaced apart from each otherwith each leg defining a generally obtuse angle relative to a planethrough which the front portion of the base extends adjacent the frontportion of the cart.
 13. The base of claim 12 wherein each rear wheel ismade from a plastic material.
 14. The base of claim 12 wherein thegenerally obtuse angle is between about 120 and about 140 degrees. 15.The base of claim 12 wherein each leg comprises: a pair of flangesspaced from each other, wherein each rear wheel extends generallyparallel to, and is sandwiched between, the pair of flanges to enablethe rear wheel to be rotatably supported by the flanges wherein oneflange of the pair of flanges comprises a shroud sized and shaped to atleast partially cover the rear wheel.
 16. The shopping cart of claim 12wherein the rear portion of the single unitary member defines agenerally concave front portion and a generally convex rear portion,with each leg of the pair of legs extending from an apex of thegenerally convex rear portion of the rear portion of the single unitarymember.
 17. A shopping cart comprising: means for containing articlesextending between a front portion and a rear portion of the cart; meansfor supporting the means for containing articles in a generallycantilevered relationship over the means for supporting adjacent thefront portion of the cart, the means for supporting extending in asingle generally vertical plane laterally across the means forcontaining articles adjacent the rear portion of the cart; and means forlocomotion of the cart including at least one portion extending from themeans for supporting in a direction generally opposite the means forcontaining articles and defining a generally obtuse angle relative to aplane through which the means for supporting extends adjacent the frontportion of the cart, wherein the means for containing articles, themeans for supporting, and the at least one portion of the means forlocomotion are made exclusively from a plastic material.
 18. Theshopping cart of claim 17 wherein the means for supporting comprises abase comprising a pair of generally vertical members laterally spacedapart from each other adjacent the rear portion of the cart, each of thegenerally vertical members positioned on an opposite side of the cartand each generally vertical member comprising a single component thatexclusively provides vertical support for the means for containing onthe respective side of the cart.
 19. The shopping cart of claim 18wherein the means for containing articles comprises a basket including apair of rear frame members laterally spaced apart from each other, witheach rear frame member defining a slot, and each of the generallyvertical members of the base comprising a prong slidably insertable intoand secured within the slot of the respective rear frame member of thebasket.
 20. The shopping cart of claim 17 wherein the at least oneportion of the means for locomotion comprises a pair of legs laterallyspaced apart from each other at the rear portion of the cart, and eachleg rotatably supporting a rear wheel, wherein the generally obtuseangle is between about 120 and about 140 degrees, and wherein the meansfor locomotion further comprises at least one front wheel rotatablysupported adjacent the front portion of the cart.